Improvement in fire-place heaters



patented 52134.16, 1871'.`

A J K IJIMMNJKl FIRE-PLACE HEATER;

UNITED STATES PATENT OFFICE.

JACOB K. DIMMICK, OF CINCINNATI, OHIO, ASSIGNOR TO HIMSELF AND u FREDERICKV A. STINE, OF SAME PLACE.

IMPROVEMENT I N FIRE-PLACE HEATERS.l

Specification forming part of Letters Patent No. 186,320, dated January 16, 1877; application ined December 18, 1875. l i

State of Ohio, have invented a certain Improvement in Fire-Place Heaters, of which the following is a specification:

This invention relates to that class of heating apparatus which utilize the waste heat of a grate-lire to warm other compartments of a house, and it has for its object such a construction of the heater that it willform the backing of the grate, expose to the fire and hot gases a great extent of surface for the absorption of heat, and embody an admirable provision for connecting its several parts, designed not only to permit expansion and contraction, but also to facilitate the setting up ofthe heater, its taking apart for repairs, and its convenient packing for shipment.

My improvement consists, first, in constructing the heater of a cold-air receiver placed directly in rear of and below the grate to utilize in great measure the downwardly reflected heat of the bed of coal; a series of upright pipes slightly separated from one another, and leading from the cold-air receiver at the base of the grate to a hot-airreceiver above, the upper ends of the pipes being curved forward, so as to arch over the grate to such an extent that the front lower edge of the hot air receiver will be about vertically above the top bar of the grate, in consequence of which the pipes and hot-air receiver will utilize and in part reflect into the room the direct rays of heat from the bed of coal, as well asfthe heat ofthe escaping hot gases circulating around the pipes andhot-air receiver. The heater thus made is set inthe lire-place, leaving between the pipes and the brick-work behind a smallspace for circulation, which space is, however, closed 'on top by so building the brick-work that the back of the hot-air reeeiver will abut against it.. Thus the hot gases may circulate around the pipes, but they are eventually compelled to pass forward under the hot-'air receiver, and escape past the front and over the topof it into the chimney above. Second, in connecting the cold-air receiver, pipes, and hot-air'receiver by rods, in such a manner as to provide for contractionand expansion, and a convenient detachment of the parts.

In the annexed drawings, Figure 1 is: a ver-4 'as may be preferred. A series of pipes, E, rise from the cold-air receiver behind the grate, leading up into the bottom of the hotair receiver F, arranged lengthwise of the lireplace, in such a manner that its lower front edge will be about vertically above the top bar of the grate. The upper ends of the pipes E are cu'rved so as to arch over the grate to the front edge of the hot-air receiver. The pipes stand a small distance from the brickwork behind, but the back of the hotair receiver isin close contact therewith, as clearly shown. The gases, after circulating around the pipes, are forced to pass under the hot-air receiver, and past the front thereof, to reach the throat or ue a at the front of the fireplace, whence they escape into the chimney Gr, first passing partially over the top of the hot-air receiver. The hotair is distributed by a pipe, H. A suitable damper may be arranged in the'tbroat a, to regulate the draft.

The pipes E are preferably semicircular in cross-section, as shown in Fig. 3, and they are provided with flanges e to t between projections or flanges e on the receivers. These projections or flanges serve to keep the pipes laterally in position, while the binding-rods I secure the entire system of pipes and receivers, in such a manner as to provide for expan' sion and contraction, and convenience in shipping and repairing the heater.

It will be observed that the pipes E extend down to the bottom of the grate, receiving thus the full benet of the heat radiated from the bed of coals.

What I claim as my invention, and desire ed, of the anged air-receivers, the anged to secure by Letters Patent, ispipes, and the binding-rods.

l. The combination, substantially as speci- In testimony of which invention I hereunto fedof the grate, the cold-air receiver, the set my hand. upright pipes forming the gratebaeking, and curved to arch over to about the front line of JACOB K' DIMMIOK the grate, and the hot-air receiver forming the Witnesses: roof of the lire-place. ACMAS. A. RAIFE,

'2. The combination, substantially as speci- F. A. BUCHANAN. 

